/Engine/Source/Runtime/Sockets/Public/Sockets.h
Accepts a connection that is pending.
The new (heap-allocated) socket, or nullptr if unsuccessful.
[FSocket](API\Runtime\Sockets\FSocket) * Accept ( [FInternetAddr](API\Runtime\Sockets\FInternetAddr) & OutAddr, const [FString](API\Runtime\Core\Containers\FString) & InSocketDescription )